| 基于行波理论的补偿电压突变量选相元件 |
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| 引用本文： | 李幼仪,董新洲,孙元章. 基于行波理论的补偿电压突变量选相元件[J]. 电力系统自动化, 2006, 30(8): 37-40 |
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| 作者姓名： | 李幼仪 董新洲 孙元章 |
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| 作者单位： | 清华大学电机系电力系统国家重点实验室,北京市,100084;清华大学电机系电力系统国家重点实验室,北京市,100084;清华大学电机系电力系统国家重点实验室,北京市,100084 |
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| 摘 要： | 为了配合高速保护,提出了一种新型的基于行波理论的相间补偿电压突变量选相元件,利用测量点的方向行波,根据输电线路的分布参数模型,采用行波传播方程计算正方向线路上补偿点的电压,并用该补偿电压构成相间电压突变量选相元件.该算法直接用采样数值进行计算,选相速度很快,适用于各种高速保护.讨论了该选相元件的原理,并通过仿真验证了该算法的正确性.
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| 关 键 词： | 选相元件 电压补偿 行波 突变量 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 1900-01-01 |
Fault Phase Selector by Fault Component of Compensation Voltage Based on Traveling Wave |
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| LI You-yi,DONG Xin-zhou,SUN Yuan-zhang. Fault Phase Selector by Fault Component of Compensation Voltage Based on Traveling Wave[J]. Automation of Electric Power Systems, 2006, 30(8): 37-40 |
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| Authors: | LI You-yi DONG Xin-zhou SUN Yuan-zhang |
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| Affiliation: | State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A novel fault phase selector by fault component of compensation voltage based on traveling wave is presented for high-speed protection. The compensation voltage is calculated from directional traveling waves by traveling wave transmitting formula on distributed parameters of transmission line. This compensation voltage is used in the fault phase selector. Sampling data of voltages and currents are used directly, hence it has high speed and is suitable for high-speed protection. The principle and algorithm are presented and EMTP simulation proves their correction. |
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| Keywords: | fault phase selector voltage compensation traveling wave fault component |
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